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Texas Instruments UCC28704 | Demoboard UCC28704EVM-724
UCC28704 5V/10W Off-Line Power Supply With PSR for USB Wall Adapters Evaluation Module
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Output 1 | 5 V / 2 A |
Description
The UCC28704EVM-724 is a 10-W off-line isolated power supply providing 5-V output on a USB-A port. The converter output voltage and current are regulated to 5% accuracy without using an optocoupler or secondary-side feedback circuits. The EVM demonstrates a low-cost solution to comply with global external power-supply efficiency standards (Department of Energy Level VI, EU Code of Conduct V5 Tier-2, etc.) without adding a secondary-side synchronous rectifier.
Features
Universal AC input range (85-V to 265-V AC), 5-V/2-A isolated output5% output voltage (CV) and current (CC) accuracy with primary-side regulation (PSR)83% average efficiency and <60-mW standby power performance exceeds DoE Level VI and EU CoC V5 Tier-2 EPS standards80-mV p-p output voltage ripple at end of 0.15-Ω cableFault protections: output overvoltage, overcurrent, and load short circuit
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-CBF SMT EMI Suppression Ferrite Bead, 300 Ω, 330 Ω | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | Impedance @ 100 MHz300 Ω | Maximum Impedance330 Ω | Maximum Impedance110 MHz | Rated Current 23000 mA | DC Resistance0.06 Ω | TypeHigh Current | ||||
 | 750315841 | Transformer, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | – | – | – | – | – | – |